This version is used to calculate lengths. Calculate the length BC. Give the answer to three significant figures. Use the form \(a^2 = b^2 + c^2 - 2bc \cos{A}\) to calculate the length. \(\text{BC} ...
cos~θ} = \frac {adjacent ... signifies the size of the angle in the triangle. If we know one of the two angles inside the triangle (not including the right angle) and the length of any of ...
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